Electric clock.



No. 638,l60. Patented Nov. 28, i899.

H..E. ANDERSSUN.

ELECTRIC CLOCK.

(Application filed Feb. 16, 1899.) (No Model.) 5 Sheets-Sheet l.

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no. 638,!60. Patented Nov. 28, I899. H. E. ANOERSSUN.

ELECTRIC CLOCK.

(Application filed Fab. 16, I899.) (Nu Model.) 5 Shea'ts$heat 2.

No. 638,l60. Patented Nov. 28, I899.

H. E. ANDERSSUN.

ELECTRIC CLOCK.

(Applicltion filed 101:. 16, 1899.) (no Model.)

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No. 638,|60. Patented Nov. 28, I899.

.H. E. ANDERSSON.

ELECTRIC CLOCK.

(Application fiked Feb. 16, 1899) 5 Sheats-Sheet 4.

(No Model.)

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ELECTRIC CLOCK. I,

(Application filed Feb. 16, 1899.) (I 01 IQME.) 5 ShaetsSheet 5,

ilwifrnn STATES PATENT QFFICE- I-IJALMAR EMANUEL ANDERSSON, OFSTOOKHOLH, SWEDEN.

ELECTRIC CLOCK.

SPECIFIOAT] ON forming part of Letters Patent No. 638,160, datedNovember 28, 1899.

Application filed February 16, 1899- Serial No. 705,711. (No model.)

To all whmn it may concern:

Be it known that I, HJALMAR EMANUEL AN- DERSSON, clock and watch maker,of Stockholm, Sweden, have invented certain new and useful Improvementsin Electrical Clockwork; and I do hereby declare the following to beafull, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawings, and tofigures of reference marked thereon, which form a part of thisspecification.

My invention has relation to clocks; and it has for its object theprovision of means for periodically and automatically winding up themotor-spring for the time mechanism.

It has for its further object the provision of means for electricallyoperating the striking appliances, and thereby dispensing with thespring usually employed for the strikingtrain, the electrical appliancesfor operating the striking mechanism serving at the same time as a meansfor periodically winding up the motor-spring for the time mechanism, sothat a comparatively short spring can be used and compactly arranged inthe clock-framing, said spring occupying an exceedingly small space ascompared with the space required for the usual striking-train spring.

The invention has for its further object a construction whereby theclock mechanism is materially simplified; and, finally, my saidinvention has for its object certain improvements in parts of the clockmechanism, whereby their construction is materially simplified and theireliiciency increased.

That my invention may be fully understood, I will describe the same indetail, reference being bad to the accompanying drawings, in which-Figure l is a front elevation of a clock mechanism constructed andorganized for operation in accordance with my invention. Fig. 2 is anelevation thereof, showing the mechanism in rear of the forwardframe-plate, which latter is removed, together with the mechanism infront thereof. Fig. 3 is a rear elevation of the mechanism arranged infront of the forward frame-plate. Fig. i is a rear elevation of theclock mechanism, the vertical arm or extension of the console or bracketwhich is designed to support said mechanism and to be secured to theclock-casing being shown in dotted lines. Figs. 5 and 6 are oppositeside elevations. Figs. 7 and 8 are detail views. Fig. 9 is averticalsection of the circuit-breaker; and Fig. 10, a cross-section thereof online A B of Fig. 9, just above the circuit-breaker proper. Fig. 11 is adetail perspective view of the hammer-operating mechanism and theappliances for controlling the operations thereof, the lower portion ofthe lever 40 being broken 0% to more clearly show the contact-plate 54,and for the sake of clearness the clock-frame plates 3 and 4 areomitted. Fig. 12 is a fragmentary top plan view ofthe mechanism shown inFig. 11, the clock-frame plates 3 and 4 being shown in dotted lines; andFig. 13 is a sectional view drawn to an enlarged scale and taken abouton line a b of Fig. 1.

In the mechanically and electrically operated clock to be describedthere is a circuit maker and breaker in the primary circuit of anelectromagnet and in a normally-closed relation to said circuit, saidcircuit maker and breaker being controlled by the armature of theelectromagnet, and in said circuit is also included a circuit-closercontrolled by the escapemcnt to close the main circuit through theelectromagnet and circuit breaker at each revolution of theescapemcntwheel, thereby oscillating the armature in one direction topartly wind up the motorspring of the time-train through intermediatemechanism and at the same time interrupt the main circuit, for purposeshereinafter described, the arn'iature swinging back to a normal positionand at the same time reopening the main circuit through thecircuit-breaker. There is a third circuit-closer in a branch or shuntfrom the main circuit, operated by the let-off cam of the strikingmechanism, for purposes hereinafter set forth, and a fourthcircuit-closer in a shunt from the main circuit for maintaining saidcircuit and the first mentioned shuntcircuit closed when thestriking-mechanism-circuit closer opens the circuit, for purposes to bedescribed. Now

in order to distinguish these circuit making and breaking devices otherthan by referencesymbols, and particularly in the claims, I will referto the first-named device as the primary-circuit breaker, to the secondas the time-circuit closer, to the third as the striking-circuit closer,and to the fourth as the auxiliary-circuit closer.

The clock mechanism is carried, as usual, by two frame-plates 3 and 4:,which will hereinafter be referred to as the forward and rearframe-plates, respectively, said plates being secured together, asusual, by spacingpillars 3, and said frame is secured to the horizontalarms 74 of a console or bracket 74 by means of screws 61. To thevertical arm or extension 74 of the bracket 74; is secured a gong, or,as shown in Fig. 4:, a soundingspring 60. The frame-plates 3 and 4 havethe form of an inverted T--that is to say, they have an upper portionthe diameter of which is considerably less than that. of the lowerportion of said plates. To the upper edge of the forward frame-plate 3is secured a cross piece 75, which carries two electromagnets 1 and 1,one on each side of the narrower upper portion of said frame-plate, thepole-shoes of which electromagnets are likewise secured to the widerportion of said plate by means of screws 76, Fig. 1. Between the twoelectromagnets 1 and-1 and supported in a ring or rings secured toframe-plate 3 is arranged the primary-circuit breaker, which may be ofany well-known construction. I prefer, however, to use thecircuit-breaker17, (shown in Figs. 1, 9, and 10,) which consists of avessel 17, preferably cylindrical and made of glass, of two glass tubes17, secured fluid-tight in the heads of the vessel, so as to leave anarrow slit between them within said Vessel, and of an arbor l7, steppedin the latter and projecting through its upper head and carrying at itsouter end a bifurcated lever 32, whose arms 32 and 32 are acted upon byan armature, said shaft also carrying a cut-off 30 in the form of a thinplate of insulating material, preferably of mica, so located on thearbor 17 as that when the latter is rocked in one direction the cut-off30 will interrupt the continuity of a body of mercury 17 in tubes 17, soas to break the electrical connection be tween the leads 16 and 18 andto reestablish said connection when arbor 17 is rocked in an oppositedirection. The described circuitbreaker is fully shown and described inLetters Patent of the United States granted to me April 11, 1899, No.622,657, and its advantages are therein fully set forth and needtherefore no further reference herein.

As shown at Fig. 1, the pole-shoes 1 and 1 ofthe electromagnets 1 and 1,respectively, are extended downward and have a concave recess in theirproximate faces, and on an arbor 5 is loosely mounted an armature 2,

secured a rod 33, that extends through an oblong opening in the forwardframe-plate 3, with its free end between the arms 32 and 32 of thebifurcated lever 32 on the arbor 17 of the circuit-breaker 17, Fig. l,and said armature-arm 2 also carries a pawl 27. As stated, the armature2 is loosely mounted on an arbor 5, which has secured to its forwardend, in front of forward frame-plate 3, a pinion 48, Fig. 1, and to itsrear end, back of the rear frame-plate 4, a hanuner-actuating disk 50,having hammer-lifting pins projecting from its front face. As shown inFigs. 2 and 7, the arbor 5 has, furthermore, secured thereto, betweenthe armature 2 and the back of the forward frame-plate 3, a ratchet-wheel 28, engaged by the aforesaid pawl 27 on the arm 2 of said armatureand by a check-pawl 29, carried by said frame-plate. On arbor 5, back ofthe armature 2, is loosely mounted a barrel 21, to the forward end ofwhich is secured a ratchet-wheel 25, which in practice may be formedintegral with said barrel, as shown in Fig. 7, engaged by a check-pawl26 on a cross-rod 26. In rear of the barrel 21 are loosely mounted onsaid arbor 5 a gearwheel 22 and a pinion 22, which is preferably formedintegral with wheel 22. The latter wheel gears with a pinion 22 on thearbor 6, which carries the escapemeut-wheel 8, and the pinion 22 mesheswith a gear-wheel 22 on the arbor 641, which carries the usual hour andminute hand sleeves.

The anchor 9, which controls the escapement-wheel, is secured to anarbor 7, that receives its oscillating movements from a pendulum in theusual manner, said arbor 7 also carrying a conductive sleeve 12,insulated therefrom and having secured thereto two contact-springs 11,that project into the patlt of a contact-pin 10, projecting from therear face of the escapement-wheel 8 and constituting the time-circuitcloser.

On the aforementioned barrel 21, as shown in Fig. 7, is wound themotor-spring 20 for the time mechanism, one end of said spring beingsecured to the forward end of said barrel and the other to thegear-wheel 22. \Vithin the barrel 21 the arbor 5 has a circular flangeor collar 5, which forms an abutment for a disk 23, between which andthe opposite end of the barrel is arranged a spring 24, coiled about thearbor, the power of which spring is sufficiently great to lock thebarrel to the arbor by frictional resistance during the winding up ofthe motor-spring 20, which frictional resistance is, however, overcomewhenever said motor-spring is wound up to excess, thus allowing thearbor 5 to revolve independently of said barrel, so that a breakage ofthe motor-spring is effectually guarded against.

From the described arrangement of motorspring and in view of the factthat said spring drives the time mechanism only it will be seen that acomparatively short spring, taking up but very little space, can be madeuse of.

IIO

In the normal position of the arn'lature 2 that is to say, in theposition it occupies when the electromagnets are demagnetized-the arm 33on armature-arm 2 holds the arm 32 on arbor 17 of the circuit-breaker 17in such a position that the cut-off 30 will not interru pt thecontinuity of the column of mercury 17 in the tubes 17 thereof.

The sleeve 12, hereinabove referred to, on the arbor 7, which carriesthe anchor of the escapement-wheel, is included in the circuit of asuitable electric generator, as a battery 13, (diagrammaticallyillustrated in Figs. 1, 2, and 4,) in which circuit are also includedthe electromagnets 1 and 1 and the terminals 16 and 18 of the describedcircuit-breaker.

The electric circuit is normally open, but normally closed through thecircuit-breaker 17, and as the escapement-wheel 8 rotates and itscontact-pin makes contact with the springs 11 on sleeve 12 on theanchor-arbor 7 the electric circuit will be closed, current flowing frombattery 13 through wire 1%, electromagnet 1, wire 15, electromagnet 1,wire 16, column of mercury 17 of circuitbreaker 17, wire 18,clock-frame, escapement-wheel arbor 6, escapement-wheel 8, itscontact-pin 10, contact-springs 11 of sleeve 12 on anchorarbor 7, andwire 19 back to battery 13.

The closure of the electric circuit produces the following results, towit: The armature 2 is attracted, and thereby caused to make a partialrevolution on arbor 5, which is transmitted, through the pawl 27 onarmature-arm 2, to the Winding-ratchet 28, and as the barrel 21 islocked to the arbor 5 by the described friction-clutch said barrel willrevolve with said arbor, and in view of the fact that one end of themotor-spring 20 is secured to the barrel 21 and the other end of saidspring to the gear 22 the spring will be partly wound up, whichoperation, as will be readily understood, takes place at each completerevolution of the escapement-wheel 8.

The distance between the arms 32 and 32 of the bifurcated lever 32 onthe cut-01f arbor 17 of the circuit-breaker 17 is such that as thearmature is rocked magnetically on the closure of the electric circuit,as above described, the arm 33 on the arm 2 of said armature willimpinge upon the arm 32 of said lever 32 and turn the cut-off arbor 17of the circuit-breaker 17, so as to move the cut-off 30 in the spacebetween the two tubes 17 and destroy the continuity of the column ofmercury in said tubes, and thereby interrupt or open the electriccircuit, the arrangement being such that this will take place a littlebefore the contact 10 moves clear of the contact-springs 11.

The opening of the circuit has for its result the demagnetization of theelectromagnets, the return of the armature 2 under the action of itsweight 34 into its normal position, and the closure of the electriccircuit through the circuit-breaker 17 by the action of the rod 33 onthe armature-arm 2 on the arm 3 of the bifurcated lever 32 on cutoffarbor 17, whereby the latter is turned and the cut-off 3O moved torestore the continuity of the column of mercury 17 in the tubes 17 ofthe circuit-breaker 17.

As is well known, the armature of an electromagnet receives a verysudden impulse whenever said electromagnet is energized, and to obviatesudden shocks on the arms 32 and 32 of the cut-off arbor 17 of thecircuitbreaker I secure to the hub of the armature a radial armterminating in a toothed sector 37 in gear with a pinion 3S on an arbor38, carrying a governor or fly 38, Figs. 2, a, and 5.

One of the important points of my invention lies in the form of theanchor-pallets, so as to red nee the contacting surfaces between saidpallets and the teeth on the escapementwheelto a minimum, andtherebycorrespondingly minimize the frictional resistance in order toavoid a stoppage of the escapementwheel when the pin 10 thereon is incontact with the springs 11 on sleeve 12 and the electric circuit isclosed. To this endl construct the anchor-pallets in the form of arcs ofa circle, having for center the axis of oscillation of the anchor 9, asshown in Fig. 3, so that the forward face of one escapement-tooth 36will have bearing on the concave face of one of the pallets 35, and asthe latter swings out and the pallet 35 swings in to engage anothertooth 30 on the escapement-wheel the forward face of the latter willhave bearing on the convex face of said pallet 35. Furthermore, theteeth on the escapementwheel 8, as more clearly shown in Fig. 8, havetheir outer faces inclined in a direct-ion opposite to the direction ofrotation of said wheel, while the body of the teeth is made taperinginwardly, so that the contact between teeth and pallet is a merel.ine-namely, at the op posite edges of the beveled faces of the teeth.Furthermore, the contact-pin 10 and contactsprings 11 are so arranged asto make contact at the moment when a pallet of the anchor engages atooth on the escapement-wheel that is to say, during the momentary stopof the eseapement-wheel Fig. S- thuS insuring a perfect contact andclosure of the electric circuit, inasmuch the contact-pin it) remains incontact with the springs 11 for a certain length of time,although thisis very short, yet sufficiently long to engender magnetic resistance atthe contacts on the closure of the electric circuit, and to minimizethis rcsistance the electric circuit is opened, as hereinabove stated,before said contacts move clear of each other and at the moment ananchorpallet moves out of contact with a tooth on the escapement-wheel,so that a stoppage of the latter cannot occur.

The striking mechanism is operated electrically. Hence the springusually en'iployed for driving the strikingtrain is dispensed with.

The arbor 0 1, as shown in Figs. 1 and 3, can rics at its forward end,in front of the forward frame-plate S, the usual minute and hourhandsleeves, and to the former is secured a pinion 66, meshing with a pinion67 on an arbor 68, which carries a pinion 69, meshing with a gear 70 onthe hour-hand sleeve, which latter also carries a snail 39 of well-knownconstruction.

On the rear face of the pinion 66 is formed a helical projection,constituting the let-off or striker-cam 42, on the helical face of whichtrails a pin 43, projecting from the end of an arm 43 of a lever 43,pivoted on a vertical pin in a stud 43, secured to the front face of theforward frame-plate 3, the arm 43" of said lever being bifurcated andstraddling the forward end of an arbor 47, which has endwise motion inits bearings in the frame-plates 3 and 4, said arbor having a collar,which forms an abutment for one end of a spring 46, coiled about thearbor, the opposite end of which spring has bearing on the rear face ofthe forward frame-plate and tends to hold the arbor in anormally-retracted position.

To the outer end of arbor 47 is secured a lever 40, which has bearing onthe bifurcated end of lever45, said lever 40 havinga toothed segment 40at its free end, adapted to gear with the pinion 48 on arbor 5,hereinabove referred to, said lever 40 being also provided with aWeighted arm 41, Figs. 1, 5, and 6.

To the lever 40 is secured a contact-pin 55, adapted to trail over asegmental contact 54, secured to, but insulated from, the forwardframe-plate 3, said contact-plate 54 having a hole, in which is securedan insulating-sleeve 57 for the reception of said contact-pin when thelever 40 is in a normal retracted position, said parts constituting thetime-circuit closer.

From what has been said it will be seen that the lever 40, under thestress of its spring 46 on arbor 47, draws the bifurcated arm 43 towardthe forward frame-plate 3, and consequently holds the arm 43 of saidlever 43 away from said plate, and the pin 43 on said lever-arm 43against the helical face of cam 42, as shown in Fig. 3. Above the arbor47 and on the snail side of lever 40 is arranged an arbor 44, which alsohas endwise motion in its bearings in the frame-plates 3 and 4 andcarries a collar that forms an abutment for one end of a spring 44,whose opposite end has bearing on the front face of rear frameplate 4and tends to hold said arbor projected forwardly in the path of lever 40and acts as a stop therefor.

To the rear end of arbor 44, back of the rear fran'le-plate 4, issecured a radial arm 49, bifurcated at its free end and straddlingasleeve 70", loose on a stub-arbor 71, projecting from the rear face ofthe frame-plate 4. To the sleeve 70 is secured a radial arm 72, adaptedto be moved into the path of the hammer-lifting pins 50, projecting fromthe front face of disk 50 on arbor 5, hereinbe'fore referred to and asmore clearly shown in Figs. ll and 12. On stub-arbor 71 is looselymounted a sleeve 53, to which are secured the hammer-rod 53 and an arm51, that projects forwardly over the lifter-arm 72 on sleeve 70 Ashereinabove stated and as more clearly shown in Figs. ll to 13, thelever 43 carries a pin 43 on its arm 43, which pin is held against thecam or helical face of the let-off cam 42 by the stress of the spring 46on arbor 47 acting on lever 40 to draw the same inwardly or toward thefront frame-plate 3. As said cam revolves, the lever 43, whosebifurcated arm 43 straddles the arbor 47 in rear of lever 40, graduallydraws the latter forwardly against the stress of the spring 40 until theaforesaid pin 43 has reached the widest part of the helical face of thelet-off cam 42 and is about to drop onto its narrowest part. At thismoment the contact-pin 55 has cleared its insulating-sleeve 57,and thelever 4(),which acts as a circuit-closer, swings toward the snail 30until its weighted arm 41 comes to rest on one of the steps of thesnail. After contact-pin 55 on lever 40 moves out of its sleeve 57 saidlever will also be beyond or clear of the outer end of the arbor 44, andas soon as the lever swings toward the snail the spring 46 on its arbor47 draws said lever rearwardly, thereby moving the arbor 44 in a likedirection against the stress of its spring 44. This rearward movement ofthe arbor 44 causes the radial arm 49 thereon to move the sleeve in alike direction, thereby ll'lOVlllQ, the hammer-lifting pin 72 into thepath of the pins 50 on disk 50, secured to arbor 5. Furthermore, as thelever 40 swings toward the snail 39 and is during this movement drawnrearwardly by the spring 46, the toothed secfor is brought into gearwith the pinion 48 on the aforesaid arbor,while the contact-pin 55 ismoved into contact with the segmental plate 54. At this moment theelectric circuit is closed, the contact-pin 55 on lever 50 hearing onsegmental contact 54,]1ereinabove referred to, and current from battery13 will flow through wire 14, electromagnet 1, wire 15, electromagnet 1,wire 16 to column of mercury in circuit -breaker 17, wire 18, clockframe and mechanism, lever 40, contacts 55 54, and wire 56 back tobattery 13. On the closure of the electric circuit the electromagnetsare energized and the armature 2 caused to make a partialrevolution,which, as hereinbefore described, is transmitted to arbor 5and to the hammeractuating disk 50 thereon, causing the hammer 52 tostrike and at the same time partially winding up the motorspring 20. Asthe armature oscillates, its arm acts upon arm 32 of the circuit-breakerto interrupt the circuit, as before described, the armature 2 swingingback and establishing the circuit again through the circuit-breaker, ashereinbei'ore explained, these operations being repeated so long as thepin 55 on lever 40 remains in contact with the contact-plate 54. Itwill, however, be observed that the lever 40 is in gear with the pinion48 during the described operations, so that at each partial rotation ofsaid arbor the lever will be moved a certain l istauce away from thesnail, or toward its normal position, until it has cleared the arbor 44,at which moment the contact-pin 55 on the lever will be in register withthe sleeve-bearing 57in contact 54, thus allowing the spring at toretract the lever, while the arbor at is projected forwardly, therebymoving the sleeve '70 through the arm 49 in a like direction andwithdrawing the radial arm '72 from the path of the lifter-pins 50 ondisk 50, the parts being again in their normal position, as hereinbeforedescribed.

It is obvious that the number of strokes of the hammer 52 will dependupon the length of time the contact-pin 55 remains in contact with thecontact-plate 54, and it is further obvious that this is determined bythe snail 39, since the greater the amplitude of the throw of lever 40toward said snail the longer will said contacts remain in contact.

To the hammer-rod 53 and to the rear frameplate 4 are secured theopposite ends of a spring 80, (see Figs. 4, 5, 6, 11., and 12,) whichspring tends to draw said rod down to the sounding-spring 60, so that assaid rod is lifted by the pins 5O on disk 50 and again released thespring 80 acts to suddenly draw the rod down onto said sounding-spring(50, thus materially increasing the force of the blow. In order that thehammer may not remain in contact with the sounding-spring afterdelivering a blow, and thereby damp or muffle the sound, I provide aresilient stop 81, projecting from the rear face of the back frame-plate4 under said hammerrod, which stop 81 yields under the blow of thehammer, but immediately recovering holds said ham mer clear of thesounding-spring 60. (See Figs. 11 and 12.)

To avoid injury to the contacts 54 55 through sparking whenever the pin55 is moved over the sleeve 57,1providea shunt-circuit.through which themain circuit is kept closed through the medium of an auxiliarycircuitcloser until the parts have returned into their normal positions.

To the front face of the forward frameplate 3 is secured, but insulatedtherefrom, a conductive plate 58, which carries a contactspring '73 inthe path of the rod 33 on the arm 2 of the armature, Fig. 1, so that assaid arm swings over to act upon arm 32 of the circuit breaker tointerrupt the circuit the shunt-circuit will be momentarily closed intothe main circuit through said arm 33, the on rrent flowing from battery13 through wire 11-, electromagnets 1 1, wire 16, circuit-breaker, wire18, clock frame and mechanism, armature-rod 33, spring 73, plate 58, andwire 50 back to battery, thus maintaining the main circuit closedthrough the shunt-circuit during the short space of time required forthe armature-rod to swing over and act upon arm 32 of thecircuit-breaker to interrupt the circuit, so that sparking at thecontacts 54 55 will be avoided.

It will be observed that in the construction described the maintime-arbor 6-1:, which carries the minute and hour hand sleeves gearedtogether, also carries the letoff cam (on the minute-hand sleeve) andthe snail, (on the hour-hand sleeve,) whereby the clock mechanism ismaterially simplified, in that the number of its operative elements isgreatly reduced.

Having thus described my invention, what I claim as new therein, anddesire to secure by Letters Patent, is

1. lhe combination with the time-train of a clock, its let-01f cam andmotor-spring, of a striking mechanism controlled by said let-off cam,said striking mechanism organized to partly wind up the time-trainspring at each blow struck by the hammer of said striking mechanism, forthe purpose set forth.

2. The combination with a time striking mechanism, an electromagnet, itsarmature, a primary-circuit breaker, a secondary-circuit closer, asuitable electric circuit including said electromagnet, circuit-breakerand circuit-closer, and means operated by the armature and operating theOllC1l1b-l)l6tll(6l and striking mechanism; ofrevoluble devices forcontrolling the operation of the circuit-closer, a motor-spring for saiddevices, means for partially winding said spring at each blow struck bythe hammer of the striking mechanism, and means for preventingoverwinding of said motor-spring, substantially as set forth.

3. The combination with the time-train and striking mechanism o'faclock, and the motorspring for said time-train; ofelectrically-controlled appliances for operating the striking mechanismorganized to partly windsaid motor-spring at each revolution of theescapement-wheel and at each blow struck by the hammer of the strikingmechanism, substantially as set forth.

4. The combination with the time-train and striking mechanism of a clockand the motorspring for said timetrain; of electrically-controlledappliances for operating the striking mechanism organized to partly windsaid inotor-spring at each revolution of the escapement-wheel and ateach blow struck by the hammer of the striking mechanism, and means forpreventing overwinding of the spring, substantially as set forth.

5. The combination with the time mechanism of a clock, itsactuating-spring, a winding mechanism therefor, a contact on theescapemen t-wheel and a resilient contact on but insulated from theanchor-arbor in the path of the one on the escapement-wheel; of a pairof electromagnets,an oscillating armature therefor mounted loosely onthe spring-winding-up arbor, means for transmitting the partial rotarymovements in one direction of said armatu re to said winding-arbor, asuitable electric circuit including the electromagnets, the anchor-arborcontact and the clock mechanism, a primary-circuit breaker included insaid circuit operated by the armature to open the circuit as itoscillates in one direction under magnetic attraction when said circuitis closed through the escapementcircuit closer and to again open thesaid circuit through the primary-circuit breaker When said armatureswings back to a normal position, for the purposes set forth.

6. The combination of the winding-up arbor, a barrel loosely mountedthereon, the time-mechanism-actuating spring coiled on said barrel andthe power-transmitting gear also loose on said arbor, said spring havingone terminal secured to said barrel and the other to saidtransmitting-gear; of a frictioncoupling for coupling the barrel to thearbor, for the purpose set forth.

7. The combination with the time mechanism of a clock, itsactuating-spring, a winding-arbor, a barrel loosely mounted thereon onwhich said spring is coiled, one end of which is secured to said barreland the other to the power-transmitting gear; of said time mechanism,and a friction-coupling coupling said barrel to said arbor; ofelectrically-controlled appliances operating to impart a partialrotation to the winding-up arbor (at each revolution of the escapement)in one and the same direction, for the purpose set forth.

8. The combination with the time mechanism of a clock, itsactuating-spring, a winding-up arbor for said spring,electrically-perated appliances for imparting to said arbor periodicalpartial rotary movements in one and the same direction, and a suitableelectric circuit including said appliances and the clock mechanism; of acircuit-closer consisting of a contact-pin on the escapement-wheel, anda contact spring or springs projecting from a sleeve on, but insulatedfrom the anchor-arbor, into the path of the aforesaid pin, said sleeveincluded in the aforesaid electric circuit and said contacts arranged toclose the circuit during one of the temporary stops of theescapementwheel, a primary-circuit breaker interposed in said circuit,means for operating the same during said temporary stop of theescapement to open the circuit, and means for subsequently reclosingsaid circuit through the primary-circuit breaker, for the purpose setforth.

9. The combination with the bifurcated lever 32 on the arbor of thecircuit-breaker 17, the electromagnets l and 1, a suitable electriccircuit including said magnets, the arbor 5, the armature 2 thereonprovided with an arm 33 extending between the arms of the aforesaidbifurcated lever, said armature carrying the toothed sector 3'7, of thearbor 38*, the pinion 38 and governor 38 thereon, said pinion in gearwith the sector 37, substantially as and for the purpose set forth.

10. The combination with the time mechanism of a clock, itsactuating-sprii'ig, a winding-up arbor for said spring, and mechanismfor revolving said arbor in one direction only, a let-off cam on theminute-hand sleeve and a snail on the hour-hand sleeve of the main arborof said time mechanism; of a striking mechanism, e]ectrically-operatedappliances controlled by said cam and snail for operating said strikingmechanism and for impartin g a partial revolution to the aforesaidwindingup arbor at each blow struck by the hammer, for the purpose setforth.

11. The combination yvith the main arbor of the time mechanism of aclock, the minute and hour hand sleeves on said arbor, a let-off camrevolving with the min ute hand sleeve, a snail revolving with thehour-hand sleeve, a striking mechanism, elcctrically-operated appliancesfor actuating the same, comprising a revoluble arbor, an armature loosethereon, and means for transmitting the oscillations of the armature tosaid arbor and revolving the same in one direction only, electromagnet-sfor said armature and a suitable electric circuit; of means controlledby the let-off cam for alternately closing and opening the electriccircuit to alternately revolve and stop the rotation of the aforesaidarbor, and means controlled by the snail for regulating the number ofclosures of said electric circuit, for the purpose set forth.

12. The combination with the main arbor of the time mechanism of aclock, the mine ute and hour hand sleeves on said arbor, a let-off cam.revolving with the minute-hand sleeve, a snail revolving with thehour-hand sleeve, a striking mechanism, electricallyoperated appliancesfor operating the same comprising a revoluble arbor, an armature loosethereon, and means for transmitting the oscillations of the armature tosaid arbor and revolving the same in one direction only, electromagnetsfor said armature, and a suitable electric circuit; of a circuitcloser,consisting of a lever provided with a contactpin, and a segmentalcontact-plate, means for holding said lever with its pin normally out ofcontact with said plate, means controlled by the let-off cam forreleasing said lever, means for moving the latter with its pin intocontact with the contact-plate when released, the amplitude of themotion of the lever, hence the time during which the circuit is closed,being controlled by the aforesaid snail, a circuit-breaker operated tointerrupt and again open the electric circuit at each oscillation of thearmature, and means operated by the armature-arbor for returning thecircuit-closing lever into its normal position, for the purpose setforth.

13. The combination with the main arbor, 64, the minute and hour handsleeves thereon, the let-off cam and snail revolving with said minuteand hour hand sleeves respectively, the arbor 5, the pinion 48 on saidarbor, the appliances for revolving said arbor 5, and the segmentalcontact 54: provided with the pinbearing 57; of the lever it) carryingcontactpin 55 and having weighted arm 41, the arbor 47 on which saidlever is mounted, the retracting-spring thereon and the lever 43 cssaeoactuated by the let-off cam and acting on lever 40 to move the same andits arbor against the stress of its spring, for the purpose set forth.

l-L. The combination with the main arbor (34, the minute and hour handsleeves thereon, the let-off cam and snail revolving with said minuteand hour hand sleeves respectively,

the arbor 5 carrying the hammer-actuating disk 50, the pinion 48, andthe armature 2 loose thereon, means for transmitting the oscillations ofsaid armature to its arbor to revolve the same in one direction only,electromagnets for said armature included in a suitable electriccircuit, the arbor 7i carrying the hammer-supporting sleeve 53 and asleeve both loose on said arbor, said sleeve 7O provided with an arm '72adapted to be moved into the path of the pins on the hami'ner-liftingdisk 50, and said sleeve 53 carrying an arm 51 extending across said arm72, the endwise-movable arbor 44, its arm L9 engaging sleeve 70 and thecontact 54 included in the aforesaid electric circuit and havinginsulated bearing-sleeve 57; of the circuitclosing lever 40 havingtoothed segment 40, a Weighted arm 41 adapted to contact with theaforesaid snail, the retractable arbor 4.7 of said lever, and acontact-pin 5e normally seated in the sleeve 57, and the lever 43operated by let-off cam to disengage the pin 54.- from its sleeve andallow the lever 40 to swing over toward the snail, substantially as andfor the purpose set forth.

15. The combination with the striking mech anism of a clock,electrically-operated appliances for actuating said mechanism, a suitable electric circuit including said appliances, a circuit-closercontrolled by the let-off cam of the time mechanism, a circuit-breaker,and means for alternately operating said circuitcloser andcircuit-breaker; of means for m aintainin g the electric circuit closedthrough the circuit breaker when the circuit closer is about tointerrupt said circuit and before the circuit-breaker is operated, forthe purpose set forth.

16. The combination with the striking in echanism of a clock,electrically-operated appliances for actuating said mechanism, asuitable electric circuit including said appliances, a circuit-closercontrolled by the let-off cam 0f the time mechanism, acircuit-breaker,and means for alternately operating said circuitcloser andcircuit-breaker; of ashunt-circuit and means for closing saidshunt-circuit into the main circuit through the circuit-breaker as thecircuit-closer interrupts said main circuit and before thecircuit-breaker is moved to interrupt the same, for the purpose setforth.

17. The combination with the striki ng mechanism of a clock,electrically-operated appliances for actuating said mechanism, asuitable electric circuit-including said appliances, a circuit-closercontrolled by the let-off cam of the time mechanism, a circuit-breaker,and

means for alternately operating said circuitcloser and circuit-breaker;of a sh nut-circuit and electrically-operatcd means for closing saidshunt circuit into the main circuit through the circuiii-breaker as thecircuitcloserinterrupts said main circuit and before the circuit-breakeris moved to interrupt the same, for the purpose set forth.

18. The combination with the let-off cam 42, snail 39, lever 4:3, arbor5 carrying pinion as and hainmer-actnating disk 50, the hammerliftingpin 70 normally out of the path of the pins on said disk 50 andelectrically-operated mechanism for revolving arbor o; of thecircuit-closing lever 40 having toothed sector 40 and contact-pin 55,the insulated contact pin 5dhaving an insulated bearingforsaid pin 55,the arbor 7 to which said lever 40 is secured and which arbor is engagedby the lever 4:53, the retracting-spring for said arbor, the arbor 44:carrying the shifting lever 4:9 in engagement with the sleeve 70carrying the aforesaid hammer-lifting pin 72, the actuating-spring 44-of said arbor 44, and a suitable electric circuit including thecontact-plate 54 and the appliances for revolving arbor 5, the recitedparts being arranged and operating substantially as and for the purposesset forth.

19. The combination with the striking mechanism of a clock, appliancesfor actuating said niechanism by successive electric impulses, anormally-open electric circuit and a primary circuit making and breakingdevice in a normally-closed relation to said circuit; of acircnit-closer, a let-off cam, means actuated thereby and actuating thecircuit-closer to periodically close the circuit, means for determiningthe length of time said circuit shall remain closed, and means foroperating the primary circuit maker and breaker to alternately open andclose the circuit during the aforesaid period of closure, for thepurpose set forth.

20. The combination with the striking mechanism of a clock, appliancesfor actuating said mechanism by successive electric impulses, anormally-open electric circuit and a primary circuit making and breakingdevice in a normally-closed relation to said circuit; of acircuit-closer, a let-off cam, means actuated thereby and actuating thecircuit-closer to periodically close the circuit, means fordetern'iining the length of time said circuit shall remain closet meansfor operating the primary circuit maker and breaker to alternately openand close the circuit during the aforesaid period of closure, and meansfor moving the circuit-closer to again open the circuit at theexpiration of said period of closure, for the tnirpose set forth.

21. The combination with the striking in echanism of a clock comprisinga sounding device, a hammer, a hammer-actuating pin, a revoluble arbor,an oscillating armature, and a hammer-lifting-piaactuating diskrespectively loose and fast on said arbor, an electromagnet for saidarmature, a normally-open electric circuit, a primary circuit making andbreaking device in a normally-closed relation to said circuit, and meansfor transmittii'ig the oscillatory movements, in one direction, of thearmature to its arbor; of a secondarycircuit closer, at let-off cam,means actuated thereby and operating the circuit-closer to periodicallyclose the circuit, means for determining the period during which saidcircuitshal 1 remain closed, and means controlled by the oscillations ofthe armature and operating the primary-circuit breaker to alternatelyopen and close the electric circuit d u ring such period of closure,substantially as and for the purpose set forth.

22. The combination with the striking mechanism of a clock, comprising asounding device, a hammer, a hamtrier-actuating pin, a revoluble arbor,an oscillating armature, a springbarrel and a driving-gear loose thereonand a haminer-lifting-pin-actuating disk fast on said arbor, amotor-spring Wound on the aforesaid barrel and having one end curedthereto and the other to said drivinggear, means for transmitting theoscillations, in one direction, of the armature to its arbor and to thespring-barrel, an electromagnet in a normally-open electric circuit, acircuit making and breaking device in a normallyclosed relation to saidcircuit; of a circuitcloser, a let-off cam driven from the aforesaidgear on the armature-arbor, means actuated by said cam and operating thecircuit-closer to periodically close the electric circuit, means fordetermining the length of time the circuit shall remain closed, andmeans controlled by the oscillations of the armature and operating theaforementioned circuit making and breaking device to alternately openand close the circuit during said period of closure, for the purpose setforth.

23. The combination with the striking mechanism of a clock, comprisingasounding device, a hammer, a hammer-actuating pin, a revoluble arbor, anoscillating armature, a sprii'ig-barrel and a driving-gear loose thereonand a hammer-lifting-pin-acutuating disk fast on said arbor, amotor-spring Wound on the aforesaid barrel and having one end securedthereto and the other to said drivinggear, means for transmitting theoscillations, in one direction, of the armature to its arbor and to thespring-barrel, an electromagnetin normally-open electric circuit,circuit mak ing and breaking device in a normally-closed relation tosaid circuit; of a circuit-closer, a let-off cam driven from theaforesaid gear on the armature-arbor, means actuated from said cam andoperating the circuit-closer to periodically close the electric circuit,means for determining the length of time the circuit shall remainclosed, means controlled by the oscillations of the armature andoperating the aforementioned circuit making and breaking device toalternately open and close the circuit during said period of closure andmeans for moving the circuit-closer to again open the circuit at theexpiratioli of said period of closure, for the purpose set forth.

2- l-.'.lhe combination with the striking mechanism of a clock,comprising a sounding device, a hammer, a hammer-actuating pin, arevoluble arbor, an oscillating arn'1ature,a

, spring-barrel and a driving-gear loose thereon, and ahammer-iifting-pin-actuating disk fast on said arbor, a motor-springwound on the aforesaid barrel and having one end sooured thereto and theother to said drivinggear, means for transmitting the oscillations, inone direction, of the armature to its arbor and to the spring-barrel, anelectromagnet in anormally-open electric circuit, a circuit making andbreaking device in a normally-closed relation to said circuit; of acircuit-closer, a letoff cam driven from the aforesaid gear on thearmature-arbor, means actuated by said cam and operating thecircuit-closer to pcriodically close the electric circuit, means fordetermining the length of time the circuit shall remain closed, meanscontrolled by the oscillations of the armature and operating theaforementioned circuit making and breaking device to alternately openand close the circuit during said period of closure, and meanscontrolled by the revolutio s of the armature-arbor for moving thecircuit-closer to again open the circuitafter the expiration of saidperiod of closure, for the purpose set forth.

25. The combination With the striking mechanism of a clock comprising asounding device, a hammer, a hammer-actuating pin, a IGXOlllblQ arbor,an oscillatory armature, a spring-barrel and a main driving gear-Wheelloose on said arbor, and a hammerlifting-pinactuating disk fast thereon,a mainspring Wound on said barrel and having one end secured thereto andthe other to said gearwheel, means for transmitting the oscillations, inone direction, of the armature to its arbor and to the spring-barrel, anelectromagnet in a normally-open main circuit, a

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circuit making and breaking device in a normally-closed relation to saidmain circuit, and a circuit-closerin said main circuit; of a branchcircuit, a circuit-closer therein, the time mechanism of the clockdriven from the aforesaid mainspring, a letoff cam, and means actuatedthereby and operating the circuit-closer to periodically close thebranch circuit through said main circuit, means for determining thelength of time said branch circuit shall remain closed, means controlledby the oscillations of the armature and operating the aforesaid circuitmaking and breakink device to alternately open and close the maincircuit and therethrough said branch circuit, means controlled by thearmaturearm for moving the circuit-closer to again interru pt the branchcircuitat the expiration of the period of closure thereof, and acircuit-closer in the main circuit controlled by the clock-escapement toclose said main circuit at every revolution of the escapementwheel,substantially as and for the purpose set forth.

26. The combination with the striking mechanism of a clock comprising asounding device, a hammer, a hammer-actuating pin, a revoluble arbor, anoscillatory armature, a spring-barrel and a main driving gear-Wheelloose on said arbor, and a hammer-lifting-pinactuating disk fastthereon, a mainspring Wound on said barrel and having one end securedthereto and the other to said gear- Wheel, means for transmitting theoscillations, in one direction, of the armature to its arbor and to thespring-barrel, means for permitting said arbor under certain conditionsto revolve independently of said barrel, an electromagnet in anormally-open main circuit, a circuit making and breaking device in anormally-closed relation to said main circuit, and a circuit-closer insaid main circuit; of a branch circuit, a circuit closer therein, thetime mechanism of the clock driven from the aforesaid main spring, aletoff cam, and means actuated thereby and operating the circuit-closerto periodically close the branch circuit through said main circuit,means for determining the length of time said branch circuit shallremain closed, means controlled by the oscillations of the armature andoperating the aforesaid circuit making and breaking devices toalternately open and close the main circuit and therethrough said branchcircuit, means controlled by the armature-arm for moving thecircuit-closer to again interrupt the branch circuit at the expirationof the period of closure thereof, and a circuit-closer in the maincircuit controlled by the clock-escapement to close said main circuit atevery revolution of the escapementwheel, substantially as and for thepurpose set forth.

In testimony that I claim the foregoing as my invention 1 have signed myname in presence of two subscribing witnesses.

llJALMAR EMANUEL ANDERSSON.

Witnesses:

TH. WAWnINsKY, M. GENBERG.

